Water Flows Uphill

An anonymous reader writes "The BBC are reporting James Dyson's new garden feature, a waterfall with water flowing uphill. Apparently, he wanted to recreate an Escher drawing."

Comments

i have previously achieved this same illusion

[Miguel de Icaza]

but using a different technique. I used a strobe on a small waterfall in a dark room- this works in the same way you can sometimes see car wheels spinning in the wrong dirrection.

When i saw dysons outdoor version while touring the flower show I hoped he had somehow used lasers to implement the strobe technique outdoors in full daylight - that would be cool. But no he is just using pumped air - no surprise really considering hes a vacuum genius :^)

Re:Uphill water flow at Disneyworld since 1971..

[anethema]

I always thought the most famous of these things was at the bay of Fundy. The level of the tide rises higher than the river level and causes REAL uphill rapids, and a semi illusionary uphill waterfall.

I havent seen it myself, but I understand its quite a mind bender to see.

There is also an optical illusion near there in..Moncton i think? You go to the base of the hill, put your car in neutral, and your car will roll up the hill. Its an optical illusion, you are actually rolling downhill, but you look and it looks uphill, no amount of thinking its downhill dispells that.

Some very neet stuff, and example of an Eschery world in real life.